3M 6291 & 6391 HEPA Mask

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3M 6291 & 6391 HEPA Respirators

3M 6291 HEPA Respirators are Proudly Made in the USAYou can finally do your yard work without suffering through all of your allergy symptoms! Economical and efficient, this mask seals tightly around the face and provides true HEPA filtration to block out dust, mold, and pollen. Do chores inside or out with the protection you need to breathe clean air. Adjustable, latex-free straps allow you to customize the fit of this mask. The body of the the mask is easily cleaned with mild soap and water. Replacement 2091 filters can be purchased as often as you need them.

The P100 rating of the 3M 2091 filters exceeds the CDC's recommended N95 rating as an effective way to block the spread of pathogens like the Avian Flu, SARS and other influenza strains. By blocking 99.97% of particles, this P100 classification makes this respirator ideal for working with toxic & non-toxic particles, as well as oil based aerosols.

NOTE: 3M recently began printing manufacture dates on the filter packs for these masks. These are not expiration dates. Mask filters are good for use up to five years FROM the date stamped on the packaging.

3M Mask Sizing
Mask measurements are made from the top of the mask to the bottom of the chin.
6291 - 4.75"
6391 - 5"

3M HEPA Respirators Video

Product Reviews & Questions

Write A Review | Read all 62 reviews.
  Excellent Product
Reviewed by: allergy sufferer from Little Rock, Arkansas

I have a strange household. My husband does the cooking and I do the yard-work. I had to go to the doctor because I was having so much trouble with breathing. I have allergies and asthma which would go into bronchitis and infection. My doctor said I couldn't do yard-work any longer. That wasn't going to happen because I love taking care of my roses, flower beds and all the rest that goes with it. I have tried other masks but they just did not work for me. That is when my research mode kicked in and I found this mask. WOW! Not only is in comfortable, but I can actually breath while wearing it. I haven't gotten sick again either. I highly recommend this product to anyone that has allergies and asthma. Oh and I wear it while cleaning house too. Fabulous product.
  Worked Great
Reviewed by: Allergic to dogs from Illinois

My in-laws have a dog that I'm severely allergic to. I can only last about 2 hours before my asthma gets dangerously bad. Don't want to spend the money for a hepa air purifier that will clean the air throughout the whole house. Using the mask I'm able to stay as long as I "want" to stay. It works!!!!
  heart saver
Reviewed by: able to farm from New York

im a heart transplant patient and this help when I am out getting in hay on the farm

Customer Q & A

Q1: What type of mask should I wear for welding galvanized steel ?
A: Good question! This 3M 6291 is an excellent choice in terms of a good welding mask. The mask comes standard with P100 HEPA rated filters that are also oil particle resistant. Specifically for the fumes associated with welding, the Organic Vapor Cartridges, listed lower on this page, are your best option. They give up a little, in terms of straight particle filtration, but can better target the fumes and chemical vapors commonly, the oxides associated with welding. I would opt for this mask, and if you find the P100 filters don't provide the chemical vapor filtration you need, you can always pick up the Organic Vapor cartridges. Hope that helps!

Q2: what mask is best to filter out smoke? I am a heart patient who uses public transportation. Smoke from smokers, fires or exhaust causes immediate cardiac symptoms. Thanks

A: The best is going to be this 6291 with the MultiGas or Organic Vapor filters. These masks seal better than most others and there is more odor/smoke adsorbing carbon in the filter cartridges than other masks. Typically though, I recommend start with the least restrictive and mask and work from there. For nuisance level smoke and odors, while traveling, out in the open or driving not for something like sitting in a smoky bar or by a campfire, the Honeycomb Carbon mask is a good fit for most. It's less expensive and the carbon in the filter does a good job with nuisance level smoke/odors and pollutants. Some people will even double the filters up for more robust filtration without losing the slim fit of this mask. The Respro Techno also does a decent job on smoke and odors. The Vogmask then RZ are the least robust of our offering, in terms of removing smoke/odors/chemical vapors. Still, if the look of the 6291 isn't a concern, then opt for it with a set of cartridges for the best filtration of these pollutants. Hope that helps!

Q3: I have a severe anaphylactic seafood/shellfish allergy. I even react to aerosolized particles that are present in the air, especially when seafood is cooked or hot. Is there a filter I could use while flying that would prevent a reaction?

A: You could try this mask or if you want to try a less expensive option but one that will provide the same filtration, opt for the 3M 8293. It is HEPA rated, like this 6291, and the 8293 works with oil based particulate 8233 does not, so it adds a little extra protection. Hope that helps!

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3M HEPA Respirator Review

3M 6291 HEPA Mask

The 3M 6291 HEPA Mask is one my favorite face masks. Unlike disposable masks, the 6291 is durable and can be used repeatedly. I have owned this mask for a several years, and have changed the HEPA filter cartridges twice. I use this mask for just about everything from yard work to more heavy duty projects like like replacing the grout in our shower. Depending on usage, you may have to replace the filters more often, so this will vary depending on use. After several years of service, this my assessment of the 6291 respirator.

What I like about the 3M 6291 HEPA Mask
  • Offers HEPA quality filtration of oil and non-oil based particles
  • Versatile filtration ideal for a wide range of uses from pollen and mold particles while raking leaves to filtering oil based particles you might encounter while staining or working with wood or fiberglass while renovating or working on your home
  • Creates a very tight seal
  • It is durable and easy to clean after dirty projects - rinse respirator itself with warm water or with a mild detergent (filters NOT washable)
  • Fits very snugly with two straps and is fully adjustable
  • Latex free
  • Two sizes available
  • MultiGas or Organic Vapor cartridges optional
  • Made in the USA
What I did not like about the 3M 6291 HEPA Mask
  • As with any tight sealing mask, in warm conditions it will make the area around my mouth sweat, so some moisture will get trapped inside

In all, the 3M 6291 HEPA Mask is the best masks we offer. With NIOSH P100 filtration, this respirator is one of the most versatile available today. It is completely sealed, non latex, HEPA grade, and you can replace the filters when necessary. If you, have allergies, do a lot of yard work, work in a shop or in places where things toxic and non-toxic particles are a concern, I strongly suggest using this mask. The filtration this mask provides also exceeds the CDC's recommended filtration level (N95) to help prevent the spread of the influenza virus. Aside from it being a little warm with extended use or in warm conditions, there is very little not to like about this durable HEPA respirator.

Could not wait to try Safeguard Window Filters. I am using them, am very pleased and have high hopes that my solution to open windows is at hand!
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Additional Resources

3M Respirator/Mask Fit Check/Test    3M Respirator Fit Test
Compare Masks
Mask Buying Guide
Mask FAQ
Mask Replacement Filters


Discount 6391 HEPA Respirator
3M 6291 HEPA - Medium (Item#: 3M0001) $22.99
3M 6391 HEPA - Large (Item#: 3M0001-L) $22.99

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